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What chemical element is needed for combustion reactions?
oxygen
Which is the element responsible for chemical weathering of rocks?
chemical reactions
What is the modern source of the roentgenium element?
Roentgenium is an artificial element, obtained via nuclear reactions in particle accelerators.
What element is used in chemical reactions that gives your body energy?
The answer is oxygen
What is made up of only one kind of atom and cannot be broken down by chemical reactions?
An element is made up of only one kind of atom and cannot be broken down by chemical reactions. Each element is defined by the number of protons in its nucleus, which determines its unique properties.
Atoms of one element change in to atoms of another element during chemical reactions?
During chemical reactions atoms remain unchanged.
What is half reactions?
oxidation or reduction of an element
How many types of single-replacement reactions ar there?
There are three main types of single‐replacement reactions: metal‐displacement reactions, halogen‐displacement reactions, and nonmetal‐displacement reactions. Each type involves the substitution of one element in a compound by another element.
What chemical element is needed for combustion reactions?
oxygen
What are the occurrences of the element nobelium?
Nobelium is an artificial element; it is prepared only by nuclear reactions in accelerators.
An element that speeds up chemical reactions is called?
Enzyme
What is the element in the periodic table that is not participate in the chemical reactions?
yes
Which is the element responsible for chemical weathering of rocks?
chemical reactions
What type of reaction cannot involve a free element as a reactant?
A Decomposition Reaction, Single Replacement Reactions, Double Replacement Reactions and Combustion Reactions...
What is the modern source of the roentgenium element?
Roentgenium is an artificial element, obtained via nuclear reactions in particle accelerators.
How can chemical reactions be used to separate important element?
For example, water reacts with zinc, releasing hydrogen, an element.
What types of reactions cannot involve a free element as a reactant?
Combustion reactions cannot involve a free element as a reactant since they involve the reaction of a fuel-rich substance with an oxidizing agent to produce heat and usually carbon dioxide and water. Two nonmetals combining to form a covalent bond also cannot involve a free element as a reactant.
